1,2,4-Trichlorobenzene
City of Whitewright
1,2,4-Trichlorobenzene is an industrial solvent that can harm the adrenal glands and may increase the risk of cancer.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
| 2020 | ND | 3 | 0 | ND |
| 2021 | ND | 3 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 3 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 5 ppb
The EWG Health Guideline of 5 ppb for 1,2,4-trichlorobenzene was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against hormone disruption.
EPA Maximum Contaminant
Level (MCL): 70 ppb
The legal limit for 1,2,4-trichlorobenzene, established in 1992, was based on a toxicity study in laboratory animals conducted in 1981. This limit may not fully protect against hormone disruption.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-03-29 | Q1813091003 | ND |
| 2018-03-29 | Q1813091006 | ND |
| 2018-03-29 | Q1813091002 | ND |
| 2019-09-03 | Q1961236001 | ND |
| 2019-09-03 | Q1961236003 | ND |
| 2019-09-03 | Q1961236005 | ND |
| 2020-10-14 | Q2040302007 | ND |
| 2020-10-14 | Q2040302009 | ND |
| 2020-10-14 | Q2040302011 | ND |
| 2021-09-28 | Q2126457001 | ND |
| 2021-09-28 | Q2126457011 | ND |
| 2021-09-28 | Q2126457003 | ND |
| 2022-06-13 | Q2216370008 | ND |
| 2022-06-13 | Q2216370010 | ND |
| 2022-10-19 | Q2231828001 | ND |
| 2023-07-25 | Q2329473005 | ND |
| 2023-07-25 | Q2329473019 | ND |
| 2023-07-25 | Q2329473024 | ND |